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Analytical design of sensors for measuring during terminal phase of atmospheric temperature planetary entryAn analytical study was conducted to develop a sensor for measuring the temperature of a planetary atmosphere from an entry vehicle traveling at supersonic speeds and having a detached shock. Such a sensor has been used in the Planetary Atmosphere Experiments Test Probe (PAET) mission and is planned for the Viking-Mars mission. The study specifically considered butt-welded thermocouple sensors stretched between two support posts; however, the factors considered are sufficiently general to apply to other sensors as well. This study included: (1) an investigation of the relation between sensor-measured temperature and free-stream conditions; (2) an evaluation of the effects of extraneous sources of heat; (3) the development of a computer program for evaluating sensor response during entry; and (4) a parametric study of sensor design characteristics.
Document ID
19720021821
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Technical Note (TN)
Authors
Millard, J. P.
(NASA Ames Research Center Moffett Field, CA, United States)
Green, M. J.
(NASA Ames Research Center Moffett Field, CA, United States)
Sommer, S. C.
(NASA Ames Research Center Moffett Field, CA, United States)
Date Acquired
September 2, 2013
Publication Date
August 1, 1972
Subject Category
Instrumentation And Photography
Report/Patent Number
A-4412
NASA-TN-D-6947
Accession Number
72N29471
Funding Number(s)
PROJECT: RTOP T17-07-04-14
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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